Dual- profeional-grade paive audio isolator, so that the signal is completely connected.DualA and XLR XLR inputs, XRL XLR outputs. Unbalanced signal can be input into balanced signal output, balanced signal can be input into balanced signal output. Each has a common ground and non-common ground switch.It can completely isolate the potential difference between the two syst, avoid AC noise interference caused by grounding probl, and prevent damage to the input components of the device due to exceively high potential differences. Achieve the secure nsmiion of audio signals.Remove the noise generated by the connection between the camera and the audio equment; the noise generated when the simultaneous interpretation equment is connected to the mixer; the noise generated by the laptop connected to the mixer; the noise generated by the electronic musical instrument connected to the mixer.Noise from distance nsmiion inconsistently; noise from equment and equment impedance mismatch. It is also suitable for a series of sound equment syst such as large-scale outdoor performances, Fast Charging protection, sound engineering, conferences, entertainment venues, exhibitions, etc. It is a neceary equment for audio system cascade.Colour:blackMaterial:MetalPackage Contents:1 x Audio signal isolatorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the ture a little different from the real thing. The measurement allowed error is +/- 1-3cm.